Purpur/patches/server/0132-Dont-run-with-scissors.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: JustDoom <justdoomdev@gmail.com>
Date: Fri, 5 Mar 2021 14:23:16 -0500
Subject: [PATCH] Dont run with scissors!


diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 6bc15456b036e2429f7433e74fae5ba86481608b..bf50d67e39ae66e789748c28aefb87c29f819747 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1645,6 +1645,13 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
                                     this.player.resetFallDistance();
                                 }
 
+                                // Purpur Start
+                                if (this.player.level().purpurConfig.dontRunWithScissors && this.player.isSprinting() && !(this.player.level().purpurConfig.ignoreScissorsInWater && this.player.isInWater()) && !(this.player.level().purpurConfig.ignoreScissorsInLava && this.player.isInLava()) && (isScissor(this.player.getItemInHand(InteractionHand.MAIN_HAND)) || isScissor(this.player.getItemInHand(InteractionHand.OFF_HAND))) && (int) (Math.random() * 10) == 0) {
+                                    this.player.hurt(this.player.damageSources().scissors(), (float) this.player.level().purpurConfig.scissorsRunningDamage);
+                                    if (!org.purpurmc.purpur.PurpurConfig.dontRunWithScissors.isBlank()) this.player.sendActionBarMessage(org.purpurmc.purpur.PurpurConfig.dontRunWithScissors);
+                                }
+                                // Purpur End
+
                                 this.player.checkMovementStatistics(this.player.getX() - d3, this.player.getY() - d4, this.player.getZ() - d5);
                                 this.lastGoodX = this.player.getX();
                                 this.lastGoodY = this.player.getY();
@@ -1696,6 +1703,13 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
         return false;
     }
     // Paper end - optimise out extra getCubes
+
+    // Purpur start
+    public boolean isScissor(ItemStack stack) {
+        return stack.is(Items.SHEARS) && (stack.getTag() == null || stack.getTag().getInt("CustomModelData") == 0);
+    }
+    // Purpur end
+
     private boolean isPlayerCollidingWithAnythingNew(LevelReader world, AABB box, double newX, double newY, double newZ) {
         AABB axisalignedbb1 = this.player.getBoundingBox().move(newX - this.player.getX(), newY - this.player.getY(), newZ - this.player.getZ());
         Iterable<VoxelShape> iterable = world.getCollisions(this.player, axisalignedbb1.deflate(9.999999747378752E-6D));
diff --git a/src/main/java/net/minecraft/world/damagesource/CombatTracker.java b/src/main/java/net/minecraft/world/damagesource/CombatTracker.java
index 9c99b2e365aacb8309f29acb9025faccd2c676b3..9e3608650c44ef5fa724c3aea86603d7bd02429c 100644
--- a/src/main/java/net/minecraft/world/damagesource/CombatTracker.java
+++ b/src/main/java/net/minecraft/world/damagesource/CombatTracker.java
@@ -99,6 +99,11 @@ public class CombatTracker {
                 Component component = ComponentUtils.wrapInSquareBrackets(Component.translatable(string + ".link")).withStyle(INTENTIONAL_GAME_DESIGN_STYLE);
                 return Component.translatable(string + ".message", this.mob.getDisplayName(), component);
             } else {
+                // Purpur start
+                if (damageSource.isScissors) {
+                    return damageSource.getLocalizedDeathMessage(org.purpurmc.purpur.PurpurConfig.deathMsgRunWithScissors, this.mob);
+                }
+                // Purpur end
                 return damageSource.getLocalizedDeathMessage(this.mob);
             }
         }
diff --git a/src/main/java/net/minecraft/world/damagesource/DamageSource.java b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
index 14fcfd7c1d3a62833978e163f4e0d6f9b2203042..33210bc66dcc5fdf03fbf438ce8734b31c4e7975 100644
--- a/src/main/java/net/minecraft/world/damagesource/DamageSource.java
+++ b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
@@ -54,6 +54,8 @@ public class DamageSource {
     // CraftBukkit end
     public @Nullable org.bukkit.block.BlockState explodedBlockState; // Paper - add exploded state
 
+    public boolean isScissors; // Purpur
+
     public String toString() {
         return "DamageSource (" + this.type().msgId() + ")";
     }
diff --git a/src/main/java/net/minecraft/world/damagesource/DamageSources.java b/src/main/java/net/minecraft/world/damagesource/DamageSources.java
index 4604f8b38460e9113e966889a679d4547f24aff6..813916852774d6482791989252ecb67b945a8f84 100644
--- a/src/main/java/net/minecraft/world/damagesource/DamageSources.java
+++ b/src/main/java/net/minecraft/world/damagesource/DamageSources.java
@@ -267,4 +267,11 @@ public class DamageSources {
     public DamageSource genericKill() {
         return this.genericKill;
     }
+    // Purpur start
+    public DamageSource scissors() {
+        DamageSource source = new DamageSource(this.damageTypes.getHolderOrThrow(DamageTypes.MAGIC));
+        source.isScissors = true;
+        return source;
+    }
+    // Purpur end
 }
diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
index 57734b187e3a66d0d244db2f7968256884957ff2..6714c095714c3a34464b9190be964ceaac718d45 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -183,6 +183,7 @@ public class PurpurConfig {
     public static String demoCommandOutput = "<green>%s has been shown the demo screen";
     public static String pingCommandOutput = "<green>%s's ping is %sms";
     public static String tpsbarCommandOutput = "<green>Tpsbar toggled <onoff> for <target>";
+    public static String dontRunWithScissors = "<red><italic>Don't run with scissors!";
     private static void messages() {
         cannotRideMob = getString("settings.messages.cannot-ride-mob", cannotRideMob);
         afkBroadcastAway = getString("settings.messages.afk-broadcast-away", afkBroadcastAway);
@@ -194,6 +195,12 @@ public class PurpurConfig {
         demoCommandOutput = getString("settings.messages.demo-command-output", demoCommandOutput);
         pingCommandOutput = getString("settings.messages.ping-command-output", pingCommandOutput);
         tpsbarCommandOutput = getString("settings.messages.tpsbar-command-output", tpsbarCommandOutput);
+        dontRunWithScissors = getString("settings.messages.dont-run-with-scissors", dontRunWithScissors);
+    }
+
+    public static String deathMsgRunWithScissors = "<player> slipped and fell on their shears";
+    private static void deathMessages() {
+        deathMsgRunWithScissors = getString("settings.messages.death-message.run-with-scissors", deathMsgRunWithScissors);
     }
 
     public static String serverModName = "Purpur";
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index 1af0f19760426f108d32d202b087323d0ef60845..9bd8d873933c4441d5055ea49239623d0fb480b1 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -197,6 +197,10 @@ public class PurpurWorldConfig {
     public List<Item> itemImmuneToExplosion = new ArrayList<>();
     public List<Item> itemImmuneToFire = new ArrayList<>();
     public List<Item> itemImmuneToLightning = new ArrayList<>();
+    public boolean dontRunWithScissors = false;
+    public boolean ignoreScissorsInWater = false;
+    public boolean ignoreScissorsInLava = false;
+    public double scissorsRunningDamage = 1D;
     private void itemSettings() {
         itemImmuneToCactus.clear();
         getList("gameplay-mechanics.item.immune.cactus", new ArrayList<>()).forEach(key -> {
@@ -234,6 +238,10 @@ public class PurpurWorldConfig {
             Item item = BuiltInRegistries.ITEM.get(new ResourceLocation(key.toString()));
             if (item != Items.AIR) itemImmuneToLightning.add(item);
         });
+        dontRunWithScissors = getBoolean("gameplay-mechanics.item.shears.damage-if-sprinting", dontRunWithScissors);
+        ignoreScissorsInWater = getBoolean("gameplay-mechanics.item.shears.ignore-in-water", ignoreScissorsInWater);
+        ignoreScissorsInLava = getBoolean("gameplay-mechanics.item.shears.ignore-in-lava", ignoreScissorsInLava);
+        scissorsRunningDamage = getDouble("gameplay-mechanics.item.shears.sprinting-damage", scissorsRunningDamage);
     }
 
     public double minecartMaxSpeed = 0.4D;